Post cap for safety fence, and safety fence

Abstract

To provide a post cap for a guard fence and the guard fence improved in manageability, workability and fitting property.SOLUTION: A resin post cap 1 for a safety fence is fitted to an upper end of a cylindrical post on which a beam member for a safety fence is installed, and includes a closing plate portion 2 that closes the upper end of the post, and a side plate portion 3 that protrudes in a cylindrical shape from a surface of the closing plate portion 2, is elastically deformable in a radial direction with a plurality of radially penetrating notches 34 formed from a protruding end 32 as a starting point toward the other end 33 on the closing plate portion 2 side, and abuts against an inner surface of the post. The side plate part 3 may have an inner peripheral rib 36 extended in a direction toward the other end 33 from the projecting end 32 on a surface, and may contact with an inner surface of the column via an outer peripheral rib 35 having on an outer surface.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a guardrail post cap for use in a guardrail erected on a road, and to the guardrail. [Background technology]

[0002] Previously, research has focused on post caps to protect the top ends of posts that make up safety fences. For example, using post caps that are separate from the posts not only improves manufacturability during post production, but also improves maintainability by allowing only the post cap to be replaced after the post is driven in, which is useful. Furthermore, when safety fences are used at the boundary between pedestrian and roadway, post caps are attached in positions where pedestrians can directly touch them, so a structure with a strong interlocking force that prevents them from easily being removed from the post is preferable. Furthermore, considering the risk of the caps flying off and hitting pedestrians in the event of a vehicle or other impact with the safety fence, plastic post caps are used to reduce the risk of secondary damage, as steel caps have a significant impact on the safety fence.

[0003] Patent Documents 1 and 2 disclose resin support pole caps that can be attached after the support pole has been installed and that are difficult to remove after attachment. Patent Document 3 also discloses a support pole cap that can be attached to an existing support pole in a crimped state and that can respond to changes in outside temperature. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-84859 [Patent Document 2] Japanese Patent Application Laid-Open No. 2003-106012 [Patent Document 3] Japanese Patent Application Laid-Open No. 2006-225944 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the support caps disclosed in Patent Documents 1 and 2 need to be fixed to the support pole with a through bolt, which requires the time and effort of managing a connecting member separate from the support cap, and the bolt installation work cannot be omitted, which presents problems of not being able to improve manageability and workability.Furthermore, the support cap disclosed in Patent Document 3 has an exposed fitting portion with the support pole, which may easily come off the support pole if it is deformed or damaged by external force such as a vehicle collision, raising concerns about fit.

[0006] The present invention was devised in consideration of the above-mentioned problems, and its purpose is to provide a guardrail fence support cap and a guardrail fence that have improved manageability, workability, and fitment. [Means for solving the problem]

[0007] The guardrail fence post cap of the first invention is a resin guardrail fence post cap that is fitted onto the upper end of a cylindrical post on which a guardrail fence beam is erected, and is characterized by comprising a blocking plate portion that blocks the upper end of the post, and a side plate portion that protrudes cylindrically from the surface of the blocking plate portion and has multiple radially penetrating notches that start from the tip and extend toward the other end on the blocking plate portion side, allowing for elastic deformation in the radial direction, and that abuts against the inner surface of the post.

[0008] The protective fence support post cap of the second invention is characterized in that, in the first invention, the side plate portion has a rib on the surface that extends in a direction from the tip toward the other end.

[0009] The safety fence post cap of the third invention is characterized in that, in the second invention, the side plate portion contacts the inner surface of the post via the rib provided on the outer peripheral surface.

[0010] The safety fence support post cap according to a fourth aspect of the present invention is any one of the first to third aspects of the present invention, characterized in that the closure plate portion has lattice ribs on the surface.

[0011] The protective fence of the fifth invention is characterized by comprising a protective fence post cap described in any one of the first to third inventions, a plurality of cylindrical posts that are erected on an installation surface and have the protective fence post cap fitted onto their upper ends, and beam materials that are installed between the plurality of posts. [Effects of the Invention]

[0012] According to the first to fifth inventions, the safety fence post cap and the safety fence have side plates that are formed with multiple notches extending from the tip to the other end, allowing for radial elastic deformation, and that abut against the inner surface of the post. That is, when inserted into the post, the side plates elastically deform radially inward and engage with the post due to a radially outward elastic restoring force. This allows the upper end of the post to be protected without welding or the installation of a joining member. This improves the manageability and workability of installing the safety fence post cap. Furthermore, because the side plates engage with the post due to elastic restoring force, even if the post deforms due to ambient temperature, they elastically deform in response to the deformation, making them less likely to come off the post. Furthermore, the mating portion is not exposed to the outside, making them less likely to come off the post even due to external forces. This improves the fit of the safety fence post cap.

[0013] In particular, according to the second aspect of the present invention, the side plate has a rib on its surface that extends from one end to the other end, which prevents damage to the side plate due to elastic deformation and improves the economic efficiency of the safety fence support cap.

[0014] In particular, according to the third aspect of the present invention, the side plate portion contacts the inner surface of the support post via the rib on the outer periphery. This reduces the contact area with the inner surface of the support post, preventing excessive friction and preventing the cap from being obstructed when fitting onto the upper end of the support post. This helps prevent a decrease in workability when installing the safety fence support post cap.

[0015] In particular, according to the fourth aspect of the present invention, the closure plate has lattice ribs on its surface. This makes it easier to uniformize the strength of the closure plate's surface compared to cases with non-lattice ribs, and prevents breakage regardless of the position at which the worker applies impact to the closure plate when fitting it to the upper end of the support. This improves the economic efficiency of the safety fence support cap. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic perspective view showing an example of a protective fence according to this embodiment. [Figure 2] FIG. 2 is a schematic front view showing an example of a protective fence support cap according to this embodiment. [Figure 3] FIG. 3 is a schematic perspective view showing an example of a safety fence support cap according to this embodiment. [Figure 4] FIG. 4 is a schematic bottom view showing an example of a safety fence support post cap according to this embodiment. [Figure 5] FIG. 5 is a schematic cross-sectional view corresponding to the cross section AA in FIG. [Figure 6] FIG. 6 is a schematic cross-sectional view corresponding to the cross section BB in FIG. [Figure 7] FIG. 7 is a schematic cross-sectional view showing an example of how to use the safety fence support cap according to this embodiment. [Figure 8] FIG. 8 is a schematic cross-sectional view showing an example of how to use the safety fence support cap according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an example of a protective fence 100 and a protective fence support post cap 1 (support post cap 1) as an embodiment of the present invention will be described in detail with reference to the drawings. In each figure, a first horizontal direction X is defined, one direction perpendicular to the first horizontal direction X is defined as a second horizontal direction Y, and a direction perpendicular to each of the first horizontal direction X and the second horizontal direction Y is defined as a vertical direction Z. The configurations in each figure are depicted schematically for the purpose of explanation, and for example, the size of each component and the size comparison between components may differ from those shown in the figures.

[0018] (100 protective fences, 1 protective fence support cap) An example of a safety fence 100 and a safety fence support post cap 1 (support cap 1) according to this embodiment will be described with reference to the drawings. Fig. 5 shows a schematic cross-sectional view corresponding to the AA section in Fig. 4, and Fig. 6 is a schematic cross-sectional view corresponding to the BB section in Fig. 4. The components of the support post cap 1 described below may be integrally molded in advance, or may be molded separately and then welded, adhered, joined, or the like to each other by a known method.

[0019] As shown in FIG. 1, the protective fence 100 is a fence erected on a mounting surface G such as a road, and is made up of a support post cap 1, multiple support posts 7, and beam members 8. The protective fence 100 is made of materials such as resin for the support post cap 1 and steel for the support posts 7 and beam members 8. The support posts 7 and beam members 8 are, for example, cylindrical (pipe-shaped). The support post cap 1 abuts against the inner surface 72a of each of the multiple support posts 7, and the beam members 8 are bolted to the outer surface 72b of each of the multiple support posts 7 using known connectors or the like.

[0020] The support column cap 1 is, for example, a resin cap material that is fitted onto the upper end 71 of the support column 7. The support column cap 1 is fitted onto the upper end 71 by being struck from above with a rubber hammer 9, for example.

[0021] As shown in Fig. 2, the support column cap 1 includes a closure plate 2 and a side plate 3. As shown in Fig. 3, the side plate 3 protrudes cylindrically from the surface of the closure plate 2, and has multiple notches 34 formed from a tip 32 of a side plate base 31 toward the other end 33, allowing it to elastically deform in the radial direction.

[0022] When the support column cap 1 is fitted to the upper end 71 of the support column 7, the side plate portion 3 receives a compressive force from the inner surface 72a of the support column 7, elastically deforming radially inward. At this time, the support column cap 1 exerts an elastic restoring force radially outward on the inner surface 72a via the side plate portion 3. As a result, the support column cap 1 is firmly fitted to the support column 7 by the elastic restoring force. In this case, the upper end 71 of the support column 7 can be protected without welding or attaching a joining member. This improves the manageability and workability of fitting the support column cap 1. Furthermore, because the support column cap 1 is fitted to the support column 7 by the elastic restoring force, even if the support column 7 deforms (expands or contracts) due to the ambient temperature, the support column cap 1 elastically deforms in response to the deformation, making it less likely to come off the support column 7. Furthermore, because the fitting portion is not exposed to the outside, it is less likely to come off the support column 7 even when external force is applied. This improves the fitability of the support column cap 1.

[0023] The support column cap 1 may further include, for example, an outer edge plate portion 4. In this case, compared to a case where the outer edge plate portion 4 is not provided, the upper end 71 of the support column 7 is not exposed to the outside, and even if a gap occurs between the support column cap 1 and the upper end 71, it is possible to prevent impurities from entering. This makes it possible to prevent a decrease in the fit of the support column cap 1.

[0024] <Closure plate part 2> The closure plate 2 is a member that closes the upper end 71 of the support 7. As shown in Figures 2 to 6, for example, the closure plate 2 has a closure base 21. The closure plate 2 may further have lattice ribs 22 on the surface of the closure base 21.

[0025] <Occluded base 21> The closed base 21 has a plate shape extending horizontally, and may be a curved plate shape or a flat plate shape. The closed base 21 is circular in bottom view (plan view) as shown in Fig. 4, for example, but may be designed into any shape such as a polygon depending on the shape of the support 7.

[0026] 2, the closure base 21 may be a curved plate bulging out on the side opposite the side plate 3. In this case, the closure plate 2 has a shell structure, which makes it easier to evenly dissipate the force of hitting the support cap 1 from above with a rubber hammer 9 or external force received after installation on the support 7, making it less likely that localized damage will occur to the closure plate 2. This improves the durability of the support cap 1.

[0027] <Lattice rib 22> The lattice ribs 22 are formed on the surface of the closure base 21. Here, the surface of the closure base 21 on which the lattice ribs 22 are formed may be the surface (inner surface) on the side plate 3 side, as shown in Figures 5 and 6, or the surface (outer surface) opposite the side plate 3. In this case, it is easier to make the strength of the surface of the closure plate 2 uniform compared to when non-lattice-shaped ribs are provided, and damage can be suppressed regardless of the position where the worker applies impact to the closure plate 2 when fitting it to the upper end 71 of the support 7. This improves the economic efficiency of the support column cap 1.

[0028] The lattice shape of the lattice ribs 22 may be any shape in which ribs extending in two or more different directions have one or more intersections, including a square lattice, a 45° lattice, a 60° lattice, a triangular lattice, a basket weave lattice, a honeycomb lattice, etc. When the closure base 21 is a curved plate, the lattice ribs 22 do not have to have a perfect lattice shape in appearance as long as they are lattice-shaped in the developed view of the closure plate 2.

[0029] <Side plate part 3> The side plate portion 3 is a cylindrical member that protrudes vertically downward (downward in the vertical direction Z) from the surface of the closure plate portion 2. As shown in Figures 2 to 6, for example, the side plate portion 3 has a side plate base portion 31, a tip 32, an other end 33, and a notch 34.

[0030] The side plate portion 3 is elastically deformable in the radial direction due to the formation of multiple notches 34. When the support column cap 1 is fitted to the support column 7, the side plate portion 3 elastically deforms in the radial direction and abuts against the inner surface of the support column 7.

[0031] The side plate portion 3 may have a rib on its surface extending in a direction from the tip 32 toward the other end 33. Specifically, the side plate portion 3 may have, for example, at least one of an outer peripheral rib 35 on its outer peripheral surface and an inner peripheral rib 36 on its inner peripheral surface. In this case, damage to the side plate portion 3 due to elastic deformation can be suppressed. This can improve the economic efficiency of the support column cap 1.

[0032] The side plate portion 3 may also come into contact with the inner surface 72a of the support 7 via the outer peripheral rib 35 on the outer periphery. In this case, the contact area with the inner surface 72a is reduced compared to when the outer peripheral rib 35 is not provided, and excessive frictional force is not generated, making it difficult for the side plate portion 3 to be impeded from fitting onto the upper end 71 of the support 7. This makes it possible to prevent a decrease in workability when attaching the support cap 1.

[0033] <Side plate base 31> The side plate base 31 is tubular and extends in the vertical direction Z, and is hollow inside. The side plate base 31 is cylindrical when viewed from the bottom (plan view), as shown in Fig. 4, for example, but may be designed into any shape, such as a polygonal tube, depending on the shape of the support 7.

[0034] <Tips 32> 2 and 3, the tip 32 is the end of the side plate base 31 that is away from the closure plate 2. As shown in FIG. 4, the tip 32 has substantially the same shape as the side plate base 31 when viewed from the bottom.

[0035] 3, the tip 32 may be machined to have a smaller diameter than the side plate base 31. In this case, the side plate 3 can be easily inserted into the hollow space of the support 7. This improves the workability of attaching the support cap 1.

[0036] <Other end 33> 2 and 3, the other end 33 is the end of the side plate base 31 that comes into contact with the closure plate 2. As shown in FIG. 4, the other end 33 has substantially the same shape as the side plate base 31 when viewed from the bottom.

[0037] <Notch 34> The notches 34 are formed so as to penetrate radially through the side plate base portion 31. A plurality of the notches 34 are formed starting from the tip 32 toward the other end 33.

[0038] As shown in FIGS. 2 and 6, the notch 34 has a generally inverted U-shape in plan view and in the cross-sectional view taken along line AA in FIG. 4. The width of the notch 34 in the circumferential direction (first horizontal direction X in FIGS. 2 and 6) is designed to allow the side plate base 31 to elastically deform, for example, approximately 1 mm to 3 mm. A notch 34 with a circumferential width significantly exceeding 3 mm is not preferred because it may cause the side plate base 31 to plastically deform when stress exceeding its elastic limit is applied to the side plate base 31, thereby reducing the elastic restoring force of the side plate base 31 and reducing the fitting force with the support 7. Furthermore, a notch 34 with a circumferential width less than 1 mm is not preferred because it may impede the elastic deformation of the side plate base 31, making it impossible to insert the support cap 1 into the hollow space of the support 7.

[0039] As shown in Fig. 4, for example, a predetermined number of notches 34 may be provided at circumferential positions of the protrusion 32 (side plate base 31) that are divided at approximately equal angles in the circumferential direction when viewed from the bottom. In this case, the elastic restoring force acting on the inner surface 72a of the support 7 is uniform, making it easier to maintain stable fit even when external force is applied. This improves the fit of the support column cap 1. Note that, in the example of Fig. 4, two notches 34a, 34b are provided at intervals of approximately 180°, but three notches may be provided at intervals of approximately 120°, or four notches may be provided at intervals of approximately 90°.

[0040] The notch 34 may be formed, for example, at a distance from the other end 33. In this case, compared to when the notch 34 is formed up to the other end 33, when the side plate base 31 elastically deforms, it is less likely to undergo plastic deformation with respect to the closure plate 2 on the other end 33 side, and the side plate base 31 is more likely to exert an elastic restoring force on the support 7. This improves the durability of the support column cap 1.

[0041] <Outer rib 35> The outer peripheral rib 35 is formed to bulge on the outer peripheral surface of the side plate base 31. As shown in Figures 2 to 4, for example, the outer peripheral rib 35 is formed to extend substantially parallel to the extension direction of the side plate base 31. The outer peripheral rib 35 has a circumferential width of, for example, about 3 mm.

[0042] As shown in Fig. 4, for example, a predetermined number of peripheral ribs 35 may be provided on the outer periphery of the side plate base 31, which is divided into approximately equal angular intervals in the circumferential direction when viewed from the bottom. In this case, the strength of the side plate base 31 is made uniform, and the contact points with the inner surface 72a of the support 7 are equally spaced, making it easier to maintain stable fit even when external force is applied. This improves the fit of the support cap 1. In the example of Fig. 4, 12 peripheral ribs 35 are provided at intervals of approximately 30°.

[0043] <Inner rib 36> The inner peripheral rib 36 is formed to bulge on the inner peripheral surface of the side plate base 31. As shown in Figures 3 to 6, for example, the inner peripheral rib 36 is formed to extend substantially parallel to the extension direction of the side plate base 31. The inner peripheral rib 36 has a circumferential width of, for example, about 3 mm.

[0044] As shown in Fig. 4, for example, a predetermined number of inner peripheral ribs 36 may be provided at inner peripheral positions of the side plate base 31, which is divided into approximately equal angular intervals in the circumferential direction when viewed from the bottom. In this case, the strength of the side plate base 31 is uniform, making it easier to maintain stable fit even when external force is applied. This improves the fit of the support column cap 1. In the example of Fig. 4, 12 outer peripheral ribs 35 are provided at intervals of approximately 30°.

[0045] <Outer edge plate part 4> The outer edge plate 4 is a cylindrical member that protrudes vertically downward from the surface of the closure plate 2, closer to the outer periphery than the side plate 3. As shown in Figures 2 to 6, the outer edge plate 4 has an outer edge base 41, an outer edge tip 42, and an outer edge other end 43. The outer edge plate 4 may further have, for example, an outer edge rib 44.

[0046] 2 and 5 to 6, the outer edge plate portion 4 is spaced apart from the side plate portion 3, and a cylindrical recess Q is formed between the outer edge plate portion 4 and the side plate portion 3. The upper end 71 of the support post 7 is inserted into the cylindrical recess Q.

[0047] <Outer edge base 41> The outer edge base 41 is cylindrical and extends in the vertical direction Z, and is hollow inside. As shown in Figures 3 and 4, for example, the outer edge base 41 is cylindrical and has a larger diameter than the side plate base 31 when viewed from the bottom (plan view), but may be designed into any shape, such as a polygonal cylinder, depending on the shapes of the support column 7 and the side plate base 31.

[0048] <Outer edge tip 42> 2 and 3, the outer edge protrusion 42 is the end of the outer edge base 41 that is away from the closure plate 2. As shown in FIG. 4, the outer edge protrusion 42 has substantially the same shape as the side plate base 31 when viewed from the bottom.

[0049] <Other end of outer edge 43> 2 and 3, the other outer edge end 43 is the end of the outer edge base 41 that comes into contact with the closure plate 2. As shown in FIG. 4, the other outer edge end 43 has substantially the same shape as the side plate base 31 when viewed from the bottom.

[0050] <Outer edge rib 44> The outer edge rib 44 is a rib formed by bulging out one or more times in the cylindrical recess Q. As shown in Figures 3 to 6, for example, the outer edge rib 44 connects the vertically downward surface of the closure base 21, the outer peripheral surface of the side plate base 31, and the inner peripheral surface of the outer edge base 41. The outer edge rib 44 abuts against the upper end 71 of the support 7 inserted into the cylindrical recess Q.

[0051] As shown in FIG. 4, for example, a predetermined number of outer edge ribs 44 may be provided on the inner periphery of the outer edge base 41 (the outer periphery of the side plate base 31) which is divided into approximately equal angular intervals in the circumferential direction when viewed from the bottom. In this case, the support of the column cap 1 by the upper end 71 of the column 7 is made uniform, making it easier to maintain stable support even when external force is applied. This improves the durability of the column cap 1. In the example of FIG. 4, 12 outer edge ribs 44 are provided at intervals of approximately 30°.

[0052] Furthermore, the outer edge rib 44 abuts against the upper end 71, causing the closed base 21 to move away from the upper end 71. In other words, even after the support column cap 1 is attached, the hollow space of the support column 7 remains in communication with the outside of the support column 7 via the cylindrical recess Q. This improves the heat dissipation of the support column 7, and prevents deformation of the support column 7 and support column cap 1 due to heat in the hollow space. This prevents a decrease in the fit of the support column cap 1.

[0053] (An example of how to use the support cap 1) Next, an example of how to use the support cap 1 in this embodiment will be described with reference to the drawings.

[0054] First, as shown in FIG. 7, for example, a worker places the support column cap 1 on the upper end 71 of the support column 7 to temporarily install it. At this time, the side panel base 31 of the support column cap 1 abuts against the inner surface 72a of the support column 7, and the outer edge rib 44 is maintained in a state separated from the upper end 71. This is because, for example, the outer diameter of at least a portion of the side panel base 31 is larger than the inner diameter of the upper end 71, and the side panel base 31 is supported by the upper end 71. Alternatively, the outer diameter of at least a portion of the side panel base 31 is approximately the same as the inner diameter of the upper end 71, but is supported by frictional force. Note that, at the time of FIG. 7, the side panel 3 is not elastically deformed, and no elastic restoring force is acting on the inner surface 72a.

[0055] Next, the worker hits the closure plate portion 2 of the support cap 1 temporarily installed on the upper end 71 downward with a rubber hammer 9, continuing this process until the outer edge rib 44 comes into contact with the upper end 71, as shown in Figure 8, for example. At this time, the support cap 1 receives a compressive force f1 directed radially inward from the inner surface 72a, causing the side plate portion 3 to elastically deform, and the notch 34a (34) to deform.

[0056] As the side plate 3 elastically deforms, the support column cap 1 exerts an elastic restoring force f2 radially outward on the inner surface 72a. The action of the elastic restoring force f2 keeps the side plate 3 of the support column cap 1 firmly in contact with the inner surface 72a, maintaining fit.

[0057] By the above method, the support column cap 1 can be fitted onto the support column 7 and used.

[0058] According to this embodiment, the safety fence post cap 1 and the safety fence 100 have a side plate portion 3 that is formed with multiple notches 34 extending from the tip 32 toward the other end 33, allowing for radial elastic deformation and abutting against the inner surface 72a of the post 7. Specifically, when the side plate portion 3 is inserted into the post 7, it elastically deforms radially inward and is engaged with the post 7 by a radially outward elastic restoring force f2. This allows the upper end 71 of the post 7 to be protected without welding or the installation of a joining member. This improves the manageability and workability of installing the safety fence post cap 1. Furthermore, because the side plate portion 3 is engaged with the post 7 by the elastic restoring force f2, even if the post 7 deforms due to ambient temperature, the side plate portion 3 elastically deforms in response to the deformation, making it less likely to come off the post 7. Furthermore, the engaged portion is not exposed to the outside, making it less likely to come off the post 7 even when subjected to external forces. This improves the fit of the safety fence post cap 1.

[0059] Furthermore, according to this embodiment, the side plate portion 3 has a rib (an outer peripheral rib 35 or an inner peripheral rib 36) on the surface that extends in a direction from the tip 32 toward the other end 33. This makes it possible to suppress damage to the side plate portion 3 due to elastic deformation. This improves the economic efficiency of the safety fence support cap 1.

[0060] Furthermore, according to this embodiment, the side plate portion 3 comes into contact with the inner surface 72a of the support post 7 via the outer peripheral rib 35 on the outer peripheral surface. This reduces the contact area with the inner surface 72a of the support post 7, preventing excessive friction and preventing the side plate portion 3 from being impeded from fitting onto the upper end 71 of the support post 7. This helps prevent a decrease in workability when attaching the safety fence support post cap 1.

[0061] Furthermore, according to this embodiment, the closure plate 2 has lattice ribs 22 on its surface. This makes it easier to uniformize the strength of the surface of the closure plate 2 compared to when it has non-lattice ribs, and prevents breakage regardless of the position at which the worker applies impact to the closure plate 2 when fitting it to the upper end 71 of the support 7. This improves the economic efficiency of the safety fence support cap 1.

[0062] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0063] 100 Guard fence 1 support cap 2 Closure plate part 21 Occlusion base 22 Lattice rib 3 Side plate part 31 Side plate base 32 Tip 33 Other end 34 Cutout 35 Peripheral rib 36 Inner rib 4 Outer edge plate 41 Outer margin base 42 Outer edge tip 43 Other end of outer edge 44 outer edge rib 7 pillars 71 Upper end 72a Inner surface 72b External surface 8 Beam material 9. Rubber hammer G Installation surface f1 Compression force f2 Elastic restoring force Q Cylindrical recess

Claims

1. A resin protective fence support cap that is fitted onto the upper end of a cylindrical support on which a protective fence beam is erected, A closing plate portion that closes the upper end of the support column; a side plate portion that protrudes cylindrically from the surface of the closure plate portion, has a plurality of radially penetrating notches formed from a tip thereof toward the other end of the closure plate portion, and is elastically deformable in the radial direction, and abuts against the inner surface of the support; To be prepared A post cap for a protective fence, characterized by:

2. The side plate portion has a rib on the surface thereof extending in a direction from the tip to the other end. The safety fence support cap according to claim 1,

3. The side plate portion is in contact with the inner surface of the support column via the rib provided on the outer circumferential surface. The safety fence support cap according to claim 2, characterized in that

4. The closure plate portion has a lattice rib on its surface. The protective fence support cap according to any one of claims 1 to 3, characterized in that:

5. The protective fence support cap according to any one of claims 1 to 3; a plurality of cylindrical posts having the protective fence post caps fitted onto their upper ends and erected on an installation surface; A beam member installed between the plurality of columns; To be prepared A protective fence characterized by:

Images